My brother and I have the same problem.
- earned coins are not being awarded
- we opened earned stickers 4 times over and over... next time we log in, we have to open the same stickers again
- I should have earned about 40k coins, each time I finish a game it shows I earned xxxx coins, but my total stays at ~6400 for the last three days
- challenges are not being awarded which is extremely frustrating, because if you've done the difficult ones you're quite happy you got it and next time you login it's all reset
- stickers that are being bought are not awarded and next time it's gone
- strangely when clicking "sticker shop" my proper coins total is being shown (46000) when I click on "buy sticker pack" it says "can't afford buy coins for £" and the total goes back to ~6400
- sometimes I finish a game and all players have 0 coins which is impossible (loosing should award 2000, winning a minimum of 2500 coins)
